公开(公告)号：US09912369B1

公开(公告)日：2018-03-06

申请号：US14962390

申请日：2015-12-08

Applicant: Altera Corporation

Inventor： Michael James Armstrong

IPC: H04B1/40 ,  H04L12/751

CPC classification number: H04B1/40 ,  H04L45/026

Abstract: An integrated circuit for adaptively maintaining a communications link during an idle mode is disclosed. The integrated circuit may operate in a first (active) mode and a second (idle) mode. The integrated circuit includes a transceiver circuit that establishes a communications link with an additional transceiver circuit of an external integrated circuit. The transceiver circuit may receive data packets from the additional transceiver circuit during the first mode. The integrated circuit further includes monitoring circuitry that monitors a health metric associated with maintaining the communications link between the transceiver circuit and the additional transceiver circuit during the second mode. A control circuit may generate keep-alive signals and adaptively adjusts the frequency of the keep-alive signals such that the health metric is satisfied.